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/* -------------------------------------------------------------------------- */
/* Copyright 2002-2012, OpenNebula Project Leads (OpenNebula.org) */
/* */
/* Licensed under the Apache License, Version 2.0 (the "License"); you may */
/* not use this file except in compliance with the License. You may obtain */
/* a copy of the License at */
/* */
/* http://www.apache.org/licenses/LICENSE-2.0 */
/* */
/* Unless required by applicable law or agreed to in writing, software */
/* distributed under the License is distributed on an "AS IS" BASIS, */
/* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. */
/* See the License for the specific language governing permissions and */
/* limitations under the License. */
/* -------------------------------------------------------------------------- */
#ifndef FIXED_LEASES_H_
#define FIXED_LEASES_H_
#include "Leases.h"
using namespace std;
/**
* The FixedLeases class represents a pool of fixed IP-MAC leases. A lease can
* be either a IP (the MAC is then PREFIX:IP) or the IP and MAC addresses. The
* pool is read from a template file, each lease is in the form:
* LEASE = [ IP = "<the ip>", MAC = "<the mac>"]
*/
class FixedLeases : public Leases
{
public:
/**
* Create a FixedLeases from template
*/
FixedLeases(SqlDB * db,
int _oid,
unsigned int _mac_prefix,
vector<const Attribute*>& vector_leases);
/**
* Create a plain FixedLeases, you can populate the lease pool using
* select()
*/
FixedLeases(SqlDB * db,
int _oid,
unsigned int _mac_prefix):
Leases(db,_oid,0,_mac_prefix),
current(leases.begin()){};
~FixedLeases(){};
/**
* Returns an unused lease, which becomes used
* @param vid identifier of the VM getting this lease
* @param ip ip of the returned lease
* @param mac mac of the returned lease
* @return 0 if success
*/
int get(int vid, string& ip, string& mac);
/**
* Ask for a specific lease in the network
* @param vid identifier of the VM getting this lease
* @param ip ip of lease requested
* @param mac mac of the lease
* @return 0 if success
*/
int set(int vid, const string& ip, string& mac);
/**
* Release an used lease, which becomes unused
* @param ip of the lease in use
*/
void release(const string& ip)
{
unset(ip);
}
/**
* Adds New leases.
* @param vector_leases vector of VectorAttribute objects. For the
* moment, the vector can only contain one LEASE
* @param error_msg If the action fails, this message contains
* the reason.
* @return 0 on success
*/
int add_leases(vector<const Attribute*>& leases, string& error_msg);
/**
* Removes leases; if they are not used.
* @param vector_leases vector of VectorAttribute objects. For the
* moment, the vector can only contain one LEASE.
* @param error_msg If the action fails, this message contains
* the reason.
* @return 0 on success
*/
int remove_leases(vector<const Attribute*>& leases, string& error_msg);
/**
* Loads the leases from the DB.
*/
int select(SqlDB * db)
{
//Read the leases from the DB
int rc = Leases::select(db);
//Update the size
size = leases.size();
return rc;
}
private:
/**
* Current lease pointer
*/
map<unsigned int, Lease *>::iterator current;
/**
* Add a lease, from the Lease interface
* @param ip ip of the lease
* @param mac mac of the lease
* @param vid identifier of the VM getting this lease
* @param error_msg If the action fails, this message contains the reason.
* @param used Flag to insert the lease as used.
* @return 0 if success
*/
int add(const string& ip,
const string& mac,
int vid,
string& error_msg,
bool used=true);
/**
* Remove an existing lease, if it is not in use.
* @param ip ip of the lease
* @param error_msg If the action fails, this message contains the reason
*/
int remove(const string& ip, string& error_msg);
/**
* Sets a lease as not used, from the Lease interface
* @param ip ip of the lease to be deleted
* @return 0 if success
*/
int unset(const string& ip);
/**
* Updates the DB entry for this lease
* @param lease Lease to be updated
* @return 0 if success
*/
int update_lease(Lease * lease);
};
#endif /*FIXED_LEASES_H_*/
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